Cas 889452-33-9,4-methyl-<i>N</i>-(7-phenyl-hept-6-ynoyl)-benzenesulfonamide

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Check Digit Verification of cas no

The CAS Registry Mumber 889452-33-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,8,9,4,5 and 2 respectively; the second part has 2 digits, 3 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 889452-33:
(8*8)+(7*8)+(6*9)+(5*4)+(4*5)+(3*2)+(2*3)+(1*3)=229
229 % 10 = 9
So 889452-33-9 is a valid CAS Registry Number.

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889452-33-9Relevant academic research and scientific papers

Lactam synthesis via the intramolecular hydroamidation of alkynes catalyzed by palladium complexes

Patil, Nitin T.,Huo, Zhibao,Bajracharya, Gan B.,Yamamoto, Yoshinori

, p. 3612 - 3614 (2007/10/03)

The palladium complexes catalyzed intramolecular hydroamidation reaction of amidoalkynes gives the corresponding lactams in good to high yields. For example, in the presence of 10 mol % of Pd(PPh3)4 and 20 mol % of PhCOOH, the reacti

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